I found it odd that nothing ever spawned on the rooftops of hospitals while it was very accessable and there was loot there in the mod. So I opened up my inventory screen and walked along the edge, and I actually found loot there through the vincinity tab. I came to the conclusion that the loot items are hidden under the floor.
- Legacy ID
Duplicate of #8809 (There are houses where you never find loot in them, because it spawns beneath the floor on the ground).
If you've got further information, please refer to this post since it has been acknowledged and is the primary report on this issue.